Unfortunatly one big feature of the MBA is the precise and responsive Multitouch Track Pad. Ubuntu support several features via uTouch, but the rest of the ecosystem is not so ready (e.g You need Touchégg emulation or some other hackish tools to bind the multitouch gestures inside the apps, and 2 finger scrolling is not enabled by default).Applications like the web browser Chrome run as smooth as osx at the benchmarks, the unique difference is that the video driver provided by Linux doesn't support WebGL.